The IfcPointOnCurve is a point defined by a parameter value of its defining curve.
NOTE Definition according to ISO/CD 10303-42:1992
A point on curve is a point which lies on a curve. The point is determined by evaluating the curve at a specific parameter value. The coordinate space dimensionality of the point is that of the basis curve.
NOTE Entity adapted from point_on_curve in ISO 10303-42.
HISTORY New entity in IFC2x2.
|LayerAssignment||SET [0:1] OF IfcPresentationLayerAssignment FOR AssignedItems||Assignment of the representation item to a single or multiple layer(s). The LayerAssignments can override a LayerAssignments of the IfcRepresentation it is used within the list of Items.|
> IFC2x3 CHANGE The inverse attribute LayerAssignments has been added.
> IFC4 CHANGE The inverse attribute LayerAssignment has been restricted to max 1. Upward compatibility for file based exchange is guaranteed.
|StyledByItem||SET [0:1] OF IfcStyledItem FOR Item||Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve.|
> IFC2x3 CHANGE The inverse attribute StyledByItem has been added.
|1||BasisCurve||IfcCurve||The curve to which point parameter relates.|
|2||PointParameter||IfcParameterValue||The parameter value of the point location.|
|Dim||INVALID||The space dimensionality of this class, determined by the space dimensionality of the basis curve.|
ENTITY IfcPointOnCurve SUBTYPE OF (IfcPoint); BasisCurve : IfcCurve; PointParameter : IfcParameterValue; DERIVE Dim : IfcDimensionCount := BasisCurve.Dim; END_ENTITY;